I really like Nosler balistic tip bullets, they are a boat tail lead core bullet without a partition. This bullet was developed with Deer hunting in mind. The bullets open up real nice and I have never had an issue at 30-06 velocities. The Midway site did have some users compain about bullets coming apart. Those users were shooting them out of magnums and an extra 200-300fps make a difference. If you read there comments the 150gr is flagged as sometimes coming apart at a close range shoulder hit and the 165gr is considered a tougher bullet. I don't think that there is anything to be gained by going down in weight to the 150gr.